General Motors Co has issued five more recalls, covering almost three million vehicles globally, Reuters has reported. The biggest US automaker said the largest of the latest recalls covers more than 2.7 million cars for tail lamp malfunctions, including the Chevrolet Malibu, Pontiac G6 and Saturn Aura cars. The other four recalls cover Malibu, Chevy Corvette sports cars, Cadillac CTS sedans and full-size trucks and SUVs.